Discussion on parameters of high density 3D seismic exploration acquisition in coal mining districts

Authors

CHENG Jianyuan, Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China
WANG Qianyao, Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China
ZHU Shujie, Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China

Abstract

In order to improve the light tar and gas yield, the yield distribution and composition characteristics of pyrolysis products of bituminous coal from Shaanxi Hongliulin in the nitrogen atmosphere and weak oxygen atmosphere were studied in a fixed bed reactor. The results showed that the yield of char and tar were reduced under the weak oxygen atmosphere, and the yield of CO and CO₂ increased significantly, leading to the increase of total gas yield. Due to the oxidation combustion reaction, the yield of H₂, CH₄ and C₂-C₃ gradually decreased with the increase of oxygen content in the pyrolysis atmosphere, and the water content changed little during the process. The decomposition temperature of pyrolysis tar in the micro oxygen atmosphere was more than that of N₂ atmosphere. When the pyrolysis temperature was 800℃ and ER=0.14, the tar yield was 6.22%, the H₂ yield was 14.01 mg/L, and the tar and H₂ product yield reached the best value. The relative content of aliphatic hydrocarbons, phenols and benzene series in pyrolysis tar was lower, and the relative content of PAHs was higher than that of pyrolysis tar in N₂. The graphitization degree of char in the weak oxygen atmosphere was lower than that of pyrolysis char in N₂, and the gasification reactivity of char in micro oxygen atmosphere was greater than that in N₂. The results provide basic data for the preparation of high-value fuel by pyrolysis of bituminous coal in fixed bed.

Keywords

bituminous coal, pyrolysis, product distribution, tar composition, reactivity

DOI

10.3969/j.issn.1001-1986.2020.06.004

Recommended Citation

CHENG Jianyuan, WANG Qianyao, ZHU Shujie, et al. (2020) "Discussion on parameters of high density 3D seismic exploration acquisition in coal mining districts," Coal Geology & Exploration: Vol. 48: Iss. 6, Article 5.
DOI: 10.3969/j.issn.1001-1986.2020.06.004
Available at: https://cge.researchcommons.org/journal/vol48/iss6/5

Reference

[1] ONGKIEHONG L. A changing philosophy in seismic data acquisition[J]. First Break,1988,6(9):281-284.

[2] 王文良. 从428XL的推出看地震数据采集系统的新发展[J]. 物探装备,2006,16(1):1-15. WANG Wenliang. New development of seismic acquisition system after 428XL prompting[J]. Equipment for Geophysical Prospecting,2006,16(1):1-15.

[3] 贾艳芳,彭珣. 从现实物探技术要求与当前数字地震仪差距看地震仪器的发展[J]. 物探装备,2013,23(4):221-225. JIA Yanfang,PENG Xun. The developing forecasting about seismic instrument based on the current geophysical requirements and the digital seismograph gap[J]. Equipment for Geophysical Prospecting,2013,23(4):221-225.

[4] 程建远,王盼,吴海,等. 地震勘探仪的发展历程与趋势[J].煤炭科学技术,2013,41(1):30-35. CHENG Jianyuan,WANG Pan,WU Hai,et al. Progress and development tendency of seismic exploration instrument[J]. Coal Science and Technology,2013,41(1):30-35.

[5] 罗福龙. 地震数据采集系统综述和展望[J]. 中国石油勘探,2007(2):41-46. LUO Fulong. Review and prospect for seismic data acquisition system[J]. China Petroleum Exploration,2007(2):41-46.

[6] 刘欣欣,吴国忱,梁锴. 单点高密度地震勘探技术研究综述[J]. 地球物理学进展,2009,24(4):1354-1366. LIU Xinxin,WU Guochen,LIANG Kai. The review of point source/point receiver high density seismic exploration technology[J]. Progress in Geophysics,2009,24(4):1354-1366.

[7] 方良才,赵伟,徐羽中,等. 淮南煤田三维地震勘探技术应用进展[J]. 中国煤炭地质,2010,22(8):73-82. FANG Liangcai,ZHAO Wei,XU Yuzhong,et al. Progression of 3D seismic prospecting technology application in Huainan mining area[J]. Coal Geology of China,2010,22(8):73-82.

[8] 赵镨,武喜尊. 高密度采集技术在西部煤炭资源勘探中的应用[J]. 中国煤炭地质,2008,20(6):11-15. ZHAO Pu,WU Xizun. High density acquisition technology and its application in Western China coal resource exploration[J]. Coal Geology of China,2008,20(6):11-15.

[9] 张永刚,王赟,尹军杰. 单点高密度地震数据处理分析与初步评价[J]. 石油地球物理勘探,2010,45(2):201-207. ZHANG Yonggang,WANG Yun,YIN Junjie. Single point high density seismic data processing analysis and initial evaluation[J]. Oil Geophysical Prospecting,2010,45(2):201-207.

[10] 王喜双,谢文导,邓志文. 高密度空间采样地震技术发展与展望[J]. 中国石油勘探,2007,12(l):49-53. WANG Xishuang,XIE Wendao,DENG Zhiwen. Development and prospect of high density spatial sampling of seismic technology[J]. China Petroleum Exploration,2007,12(l):49-53.

[11] 刘振武,撒利明,董世泰,等. 中国石油高密度地震技术的实践与未来[J]. 石油勘探与开发,2009,36(2):129-135. LIU Zhenwu,SA Liming,DONG Shitai,et al. Practices and expectation of high-density seismic exploration technology in CNPC[J]. Petroleum Exploration and Development,2009,36(2):129-135.

[12] 汤红伟. 煤矿采区高密度三维地震技术研究与应用[D]. 北京:煤炭科学研究总院,2010. TANG Hongwei. Research and application of high density 3D seismic exploration in coal mining area[D]. Beijing:China Coal Research and Institue,2010.

[13] 刘振武,撒利明,董世泰,等. 中国石油物探技术现状及发展方向[J]. 石油勘探与开发,2010,37(1):1-10. LIU Zhenwu,SA Liming,DONG Shitai,et al. Current situation and trend of geophysical technology in CNPC[J]. Petroleum Exploration and Development,2010,37(1):1-10.

[14] 孙升林. 努力提高三维地震勘探精度,为西部煤炭工业做出新贡献[J]. 中国煤炭地质,2008,20(6):1-5. SUN Shenglin. Actively Improving 3D seismic prospecting accuracy for Western China coal industrial development[J]. Coal Geology of China,2008,20(6):1-5.

[15] 武喜尊. 高精度煤炭三维地震勘探技术[J]. 物探与化探,2008,32(1):23-27. WU Xizun. High-precision three-dimensional seismic technique for coal exploration[J]. Geophysical&Geochemical Exploration,2008,32(1):23-27.

[16] 赵伟,吕霖. 淮南矿区精细三维地震勘探方法与效果评价[C]//中国煤炭学会矿井地质专业委员会2008年学术论坛文集,2008:3-9. ZHAO Wei,LYU Lin. Method and effect evaluation of fine three dimensional seismic exploration in Huainan mining area[C]//Proceedings of 2008 Academic Forum,Mine Geology Committee,China Coal Society,2008:3-9.

[17] 汤红伟. 相同条件下数字检波器与模拟检波器的三维地震勘探效果对比分析[J]. 中国煤炭地质,2017,29(10):76-80. TANG Hongwei. Comparative analysis of digital geophone and analog geophone 3D seismic prospecting results under same conditions[J]. Coal Geology of China,2017,29(10):76-80.

[18] 张兴平,王秀荣. 煤炭地下气化区高密度三维地震勘探技术研究[J]. 中国煤炭地质,2010,22(8):1-4. ZHANG Xingping,WANG Xiurong. A study on high density 3D seismic prospecting technology used in underground coal gasification[J]. Coal Geology of China,2010,22(8):1-4.

[19] 屠世杰. 高精度三维地震勘探中的炮密度、道密度选择:YA高精度三维勘探实例[J]. 石油地球物理勘探,2010,45(6):926-935. TU Shijie. Selection of shot density and trace density in high precision 3D seismic exploration:A high precision 3D exploration case in YA area[J]. Oil Geophysical Prospecting,2010,45(6):926-935.

[20] 王梅生,胡永贵,王秋成,等. 高密度地震数据采集中参数选取方法探讨[J]. 勘探地球物理进展,2009,32(6):404-408. WANG Meisheng,HU Yonggui,WANG Qiucheng,et al. Parameter selection in high-density seismic acquisition[J]. Progress in Exploration Geophysics,2009,32(6):404-408.

[21] 崔庆辉,尚新民,滕厚华,等.高密度三维地震观测系统设计技术与应用[J]. 石油物探,2020,59(1):12-22. CUI Qinghui,SHANG Xinmin,TENG Houhua,et al.Design of a high-density three-dimensional seismic geometry and its application[J]. Geophysical Prospecting for Petroleum,2020,59(1):12-22.

[22] 赵会欣,晋志刚,张宇生,等. 高密度空间采样地震采集覆盖次数的选择[J]. 天然气工业,2007,27(增刊A):68-69. ZHAO Huixin,JIN Zhigang,ZHANG Yusheng,et al. Selection of fold number for high density spatial sampling seismic acquisition[J]. Natural Gas Industry,2007,27(Sup.A):68-69.

[23] 钱荣钧. 关于地震采集空间采样密度和均匀性分析[J]. 石油地球物理勘探,2007,42(2):235-243. QIAN Rongjun. Analysis on spatial sampling density and uniformity of seismic acquisition[J]. Oil Geophysical Prospecting,2007,42(2):235-243. 赵育台. 煤层陷落柱三维高密度地震探测与效果[J]. 工程地质学报,2012,20(增刊1):742-748. ZHAO Yutai. Coal seam collapse column 3D high-density seismic exploration and exploration effect[J]. Journal of Engineering Geology,2012,20(Sup.1):742-748.

[24] 李庆忠. 走向精确勘探的道路:高分辨率地震勘探系统工程剖析[M]. 北京:石油工业出版社,1993. LI Qingzhong. The way to obtain a better resolution in seismic prospecting:A systematical analysis of high resolution seismic exploration[M]. Beijing:Petroleum Industry Press,1993.

[25] 李庆忠,魏继东. 高密度地震采集中组合效应对高频截止频率的影响[J]. 石油地球物理勘探,2007,42(4):363-369. LI Qingzhong,WEI Jidong. Influence of array effect on cutoff frequency of high frequency in high-density seismic acquisition[J]. Oil Geophysical Prospecting,2007,42(4):363-369.

[26] 张建军,徐礼贵,黄元溢,等. 一次高密度全方位煤矿三维地震采集探索[C]//2015年物探技术研讨会,2015:147-150. ZHANG Jianjun,XU Ligui,HUANG Yuanyi,et al. A three-dimensional seismic acquisition and exploration of a high-density omni-directional coal mine[C]//2015 Geophysical Technology Symposium,2015:147-150.

[27] 田忠斌. 高精度三维地震勘探关键技术研究及应用[J]. 中国煤炭地质,2010,22(3):44-49. TIAN Zhongbin. Research on high-precision 3D seismic prospecting key technologies and application[J]. Coal Geology of China,2010,22(3):44-49.

[28] 张胤彬. 三维地震小面元采集技术在晋城矿区的应用[J]. 中国煤炭地质,2008,20(6):70-73. ZHANG Yinbin. Application of 3D seismic small sur face element acquisition technology in Jincheng mining area[J]. Coal Geology of China,2008,20(6):70-73.

[29] 杨臣明. 全数字高密度煤矿采区三维地震技术研究与实践[J]. 中国煤炭地质,2014,26(3):46-52. YANG Chenming. All digital high density coalmine winning district 3D seismic prospecting technology research and practices[J]. Coal Geology of China,2014,26(3):46-52.